:root {
  --bg: #f6eedc;
  --bg-elevated: #fbf6ea;
  --bg-content: #f8f1e3;
  --text-primary: #2e2a26;
  --text-inverse: #fbf6ea;
  --accent: #7a8450;
  --accent-dark: #203501;
  --accent-darker: #253a06;
  --accent-tint: #a3ae7c;
  --taupe: #8a7f69;
  --yellow: #f3cb00;
  --border: #090909;
  --card-unlocked: #e4dac4;
  --card-locked: #e8dcc0;
  --badge-bg: rgba(46, 42, 38, 0.75);
  --badge-text: #f5e6c8;
  --bar-track: #f5e6c8;
  --nav-bg: #eae1cb;
  --panel-bg: #efe3c4;
  --danger: #a8483b;
  --shadow-sm: 2px 2px 0px var(--border);
  --shadow-md: 4px 4px 0px var(--border);
  --radius-sm: 4px;
  --radius-md: 8px;
  --font-pixel: 'Silkscreen', monospace;
  --font-mono: 'Geist Mono', monospace;
  --font-score: 'Press Start 2P', monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100vh;
  overflow: hidden;
  background: #d8cdb0;
  color: var(--text-primary);
  font-family: var(--font-mono);
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 0;
}

img { image-rendering: pixelated; }

button, select, input { font-family: inherit; }

#phone {
  position: relative;
  width: 402px;
  max-width: 100vw;
  height: 874px;
  max-height: 100vh;
  background: var(--bg);
  overflow: hidden;
  box-shadow: 0 30px 60px rgba(0,0,0,0.35);
  border-radius: 36px;
  border: 8px solid #1c1a16;
}

.screen {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  background: var(--bg);
  animation: screen-in 0.22s ease;
}
.screen.active { display: flex; }

@keyframes screen-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- shared atoms ---------- */

.icon-btn {
  width: 48px; height: 48px;
  background: var(--bg-elevated);
  border: 2.5px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}
.icon-btn img { width: 22px; height: 22px; object-fit: contain; }
.icon-btn.small { width: 40px; height: 40px; }
.icon-btn:active { transform: translate(2px, 2px); box-shadow: none; }
.icon-btn img.flip { transform: rotate(180deg); width: 16px; height: 16px; }

.coin-chip {
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  display: flex; align-items: center; gap: 6px;
  padding: 8px 14px;
  font-family: var(--font-score);
  font-size: 13px;
  flex-shrink: 0;
}
.coin-chip img { width: 18px; height: 18px; object-fit: contain; }

.btn {
  border: 2.5px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: clamp(11px, 2.2vh, 16px) 24px;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-pixel);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  cursor: pointer;
  width: 266px;
  max-width: 100%;
  flex-shrink: 0;
}
.btn.full { width: 100%; }
.btn:active { transform: translate(4px, 4px); box-shadow: none; }
.btn-primary { background: var(--accent); color: var(--text-inverse); }
.btn-secondary { background: var(--bg-elevated); color: var(--text-primary); }
.btn-danger { background: var(--bg-elevated); color: var(--danger); border-color: var(--danger); }
.btn-icon { width: 20px; height: 20px; object-fit: contain; }

.col { display: flex; flex-direction: column; flex-shrink: 0; }
.header-row {
  display: flex; flex-direction: row; align-items: center; justify-content: space-between;
  padding: clamp(16px, 5vh, 40px) 24px clamp(2px, 0.5vh, 4px);
  flex-shrink: 0;
  width: 100%;
}

.hero-copy { align-items: center; padding-top: clamp(10px, 7vh, 60px); flex-shrink: 0; }
.title-row { display: flex; align-items: center; gap: 12px; }
.dot { width: 8px; height: 8px; background: var(--yellow); flex-shrink: 0; }
.game-title {
  font-family: var(--font-mono);
  font-weight: 900;
  font-size: clamp(30px, 8.5vh, 46px);
  letter-spacing: 5px;
  margin: 0;
  display: flex; flex-direction: column; align-items: center;
  line-height: 1.05;
  text-shadow: 3px 3px 0px rgba(246,238,220,0.7);
}
.t-dark { color: #090909; }
.t-green { color: var(--accent-dark); }
.subtitle-row { display: flex; align-items: center; gap: 12px; margin-top: clamp(6px, 1.5vh, 14px); }
.hr { width: 28px; height: 2px; background: #090909; }
.hr.sm { width: 24px; background: var(--accent); }
.subtitle {
  font-family: var(--font-mono); font-weight: 800; font-size: 12px;
  letter-spacing: 3.2px; color: var(--accent-darker); text-transform: uppercase;
  text-shadow: 1px 1px 0px rgba(246,238,220,0.7);
}
.subtitle.sm { font-weight: 700; color: var(--accent); font-size: 12px; }

.scene-wrap { position: relative; flex: 1; min-height: 0; display: flex; flex-direction: column; overflow: hidden; }
.parallax-bg {
  position: absolute; inset: 0; z-index: 0;
  background-image: url('assets/world_desert_bg.png');
  background-size: auto 145%;
  background-repeat: repeat-x;
  background-position: center 32%;
  opacity: 0.6;
  filter: saturate(0.95);
  pointer-events: none;
}
.scene-wrap > .col { position: relative; z-index: 1; }
.hero-dino {
  position: relative; z-index: 2;
  flex: 1 1 auto; min-height: 0;
  display: flex; align-items: center; justify-content: center;
  padding-bottom: clamp(8px, 3vh, 24px);
}
.hero-dino img {
  height: 100%; width: auto; max-height: 190px; max-width: 78%;
  object-fit: contain; image-rendering: pixelated;
  filter: drop-shadow(0 8px 6px rgba(0,0,0,0.25));
}
.run-bob { animation: run-bob 0.6s infinite ease-in-out; }
@keyframes run-bob {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-6px) rotate(-2deg); }
}
.cta-col { align-items: center; gap: clamp(8px, 1.5vh, 12px); padding: 0 24px clamp(14px, 3.2vh, 28px); position: relative; z-index: 2; }

/* ---------- bottom nav ---------- */
.bottom-nav {
  background: var(--nav-bg);
  border-top: 3px solid rgba(0,0,0,0.15);
  display: flex; gap: 4px;
  padding: clamp(6px, 1.5vh, 11px) 6px clamp(4px, 1vh, 8px);
  flex-shrink: 0;
}
.nav-tab {
  flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 8px 2px;
  border: none; background: transparent; border-radius: var(--radius-md);
  cursor: pointer;
  font-family: var(--font-pixel); font-weight: 700; font-size: 9px;
  letter-spacing: 0.2px; text-transform: uppercase;
  color: var(--taupe);
  white-space: nowrap;
}
.nav-tab img { width: 24px; height: 24px; object-fit: contain; margin-bottom: 2px; flex-shrink: 0; }
.nav-tab span { max-width: 100%; overflow-wrap: break-word; word-break: break-word; text-align: center; line-height: 1.15; }
.nav-tab.active { background: var(--accent-tint); color: var(--accent); }

/* ---------- generic page header / content ---------- */
.page-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 40px 24px 16px;
  flex-shrink: 0;
}
.page-header.centered { position: relative; }
.page-header.centered .heading.small { position: absolute; left: 50%; transform: translateX(-50%); margin: 0; }

.page-content {
  flex: 1; overflow-y: auto; padding: 8px 24px 24px;
  display: flex; flex-direction: column; gap: 20px;
}
.page-content::-webkit-scrollbar { width: 0; }

.title-block { display: flex; flex-direction: column; align-items: center; gap: 8px; text-align: center; }
.heading {
  font-family: var(--font-mono); font-weight: 900; font-size: 26px;
  letter-spacing: 3.2px; text-transform: uppercase; margin: 0; color: var(--text-primary);
}
.heading.small { font-size: 20px; }
.center-sub { text-align: center; opacity: 0.6; font-size: 10px; letter-spacing: 2px; margin: -12px 0 4px; text-transform: uppercase;}

.section-label {
  font-family: var(--font-mono); font-weight: 700; font-size: 11px;
  letter-spacing: 2px; text-transform: uppercase; color: var(--text-primary); opacity: 0.75;
  margin: 0;
}
.section-label.center { text-align: center; }

/* ---------- customize mini rows ---------- */
.custom-section { display: flex; flex-direction: column; gap: 10px; }
.mini-row { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 2px; }
.mini-card {
  flex: 0 0 auto; width: 84px; display: flex; flex-direction: column; align-items: center; gap: 6px;
  cursor: pointer;
}
.mini-thumb {
  width: 84px; height: 84px; border-radius: var(--radius-sm);
  background: var(--card-unlocked);
  border: 2px dashed rgba(46,42,38,0.3);
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.mini-thumb img { width: 52px; height: 52px; object-fit: contain; }
.mini-thumb.world-thumb, .mini-thumb.obstacle-thumb { padding: 4px; }
.mini-thumb.world-thumb img { width: 100%; height: 100%; object-fit: cover; border-radius: 2px; }
.mini-card.locked .mini-thumb { opacity: 0.55; border-style: solid; border-color: rgba(46,42,38,0.15); }
.mini-card.selected .mini-thumb { border: 2.5px solid var(--accent); box-shadow: var(--shadow-sm); background: var(--accent-tint); }
.mini-card .lock-badge { position: absolute; top: 4px; right: 4px; width: 16px; height: 16px; }
.mini-label { font-size: 9px; font-weight: 700; letter-spacing: 0.3px; text-transform: uppercase; text-align: center; }
.check-badge {
  position: absolute; top: -6px; right: -6px; width: 20px; height: 20px;
  background: var(--accent); border-radius: 50%; border: 2px solid var(--border);
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 11px; font-weight: 900;
}

/* ---------- search + filters ---------- */
.search-bar {
  background: var(--bg-elevated); border: 2.5px solid var(--text-primary);
  border-radius: var(--radius-sm); box-shadow: var(--shadow-sm);
  display: flex; align-items: center; gap: 8px; padding: 10px 12px;
}
.search-bar input {
  border: none; outline: none; background: transparent; flex: 1;
  font-size: 14px; color: var(--text-primary);
}
.search-bar input::placeholder { color: rgba(46,42,38,0.5); }

.filter-tabs { display: flex; gap: 8px; overflow-x: auto; }
.filter-tab {
  background: var(--bg-elevated); border: 2.5px solid var(--text-primary);
  border-radius: var(--radius-sm); padding: 8px 12px;
  font-family: var(--font-mono); font-weight: 700; font-size: 12px;
  letter-spacing: 1px; text-transform: uppercase; color: var(--text-primary);
  white-space: nowrap; cursor: pointer; flex-shrink: 0;
}
.filter-tab.active { background: var(--accent); color: var(--bg-elevated); box-shadow: var(--shadow-sm); }

/* ---------- card grid (characters / worlds) ---------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.card-grid.two-col { grid-template-columns: repeat(2, 1fr); }
.lib-card { display: flex; flex-direction: column; gap: 4px; cursor: pointer; }
.lib-card-frame {
  background: var(--card-unlocked); border: 2px dashed rgba(46,42,38,0.3);
  border-radius: var(--radius-sm); height: 100px;
  display: flex; align-items: center; justify-content: center; position: relative;
  padding: 8px;
}
.lib-card-frame img { width: 48px; height: 48px; object-fit: contain; }
.card-grid.two-col .lib-card-frame { height: 84px; }
.card-grid.two-col .lib-card-frame img { width: 100%; height: 100%; object-fit: cover; border-radius: 3px; }
.lib-card.locked .lib-card-frame { background: var(--card-locked); border: 2px solid rgba(46,42,38,0.15); opacity: 0.7; }
.lib-card.locked img { opacity: 0.5; }
.lib-card.selected .lib-card-frame { border: 2.5px solid var(--accent); box-shadow: var(--shadow-sm); }
.locked-badge {
  position: absolute; top: 8px; left: 8px; background: var(--badge-bg); color: var(--badge-text);
  font-size: 8px; font-weight: 700; letter-spacing: 0.8px; text-transform: uppercase;
  padding: 2px 6px; border-radius: 4px;
}
.lib-card-label { font-size: 10px; font-weight: 700; letter-spacing: 0.3px; text-transform: uppercase; }
.lib-card.locked .lib-card-label { color: rgba(46,42,38,0.6); }

/* ---------- selected panel ---------- */
.selected-panel {
  background: var(--panel-bg); border: 2.5px solid var(--text-primary);
  border-radius: var(--radius-md); box-shadow: var(--shadow-md);
  padding: 16px; display: flex; flex-direction: column; gap: 16px;
}
.selected-panel .head-row { display: flex; align-items: center; gap: 16px; }
.selected-panel .thumb {
  width: 80px; height: 80px; background: #e3d6b4; border: 2px dashed rgba(46,42,38,0.4);
  border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  overflow: hidden;
}
.selected-panel .thumb img { width: 52px; height: 52px; object-fit: contain; }
.selected-panel .thumb.world-thumb img { width: 100%; height: 100%; object-fit: cover; }
.selected-panel .info { display: flex; flex-direction: column; gap: 4px; }
.selected-panel .name { font-size: 18px; font-weight: 800; letter-spacing: 0.4px; text-transform: uppercase; }
.selected-panel .tag { font-size: 10px; font-weight: 700; color: var(--accent); letter-spacing: 1px; text-transform: uppercase; }
.stat-row { display: flex; align-items: center; gap: 8px; }
.stat-row .label { font-size: 10px; font-weight: 700; opacity: 0.6; letter-spacing: 1px; text-transform: uppercase; width: 48px; flex-shrink: 0; }
.bar { flex: 1; height: 12px; background: var(--bar-track); border: 2px solid var(--text-primary); border-radius: 4px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--accent); }

/* ---------- obstacle list ---------- */
.obstacle-list { display: flex; flex-direction: column; gap: 10px; }
.obstacle-row {
  background: var(--card-unlocked); border: 2.5px solid var(--text-primary); border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm); padding: 14px 16px; display: flex; align-items: center; gap: 14px; cursor: pointer;
  position: relative;
}
.obstacle-row.locked { background: var(--card-locked); opacity: 0.75; }
.obstacle-row.selected { border-color: var(--accent); box-shadow: var(--shadow-md); }
.obstacle-row img { width: 40px; height: 40px; object-fit: contain; }
.obstacle-row .name { font-weight: 700; font-size: 14px; text-transform: uppercase; letter-spacing: 0.5px; flex: 1; }
.obstacle-row .rarity-badge { font-size: 9px; font-weight: 700; padding: 2px 8px; border-radius: 4px; text-transform: uppercase; background: var(--accent-tint); color: var(--accent-dark); }
.obstacle-row.locked .rarity-badge { background: rgba(46,42,38,0.75); color: var(--badge-text); }

/* ---------- settings ---------- */
.settings-content { gap: 24px; }
.settings-group { display: flex; flex-direction: column; gap: 10px; }
.settings-card {
  background: var(--bg-elevated); border: 2.5px solid var(--text-primary); border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm); padding: 14px 16px; display: flex; flex-direction: column; gap: 14px;
}
.toggle-row, .slider-row, .select-row { display: flex; align-items: center; justify-content: space-between; font-size: 13px; font-weight: 600; }
.toggle { position: relative; width: 44px; height: 24px; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; inset: 0; background: #d8cdb0; border: 2px solid var(--text-primary); border-radius: 20px; transition: 0.15s; }
.slider::before { content: ""; position: absolute; width: 16px; height: 16px; left: 2px; top: 2px; background: var(--bg-elevated); border: 2px solid var(--text-primary); border-radius: 50%; transition: 0.15s; }
.toggle input:checked + .slider { background: var(--accent); }
.toggle input:checked + .slider::before { transform: translateX(20px); background: var(--text-inverse); }
.range { width: 55%; accent-color: var(--accent); }
.slider-row { flex-wrap: wrap; gap: 8px; }
select#opt-language {
  border: 2px solid var(--text-primary); border-radius: var(--radius-sm); padding: 6px 10px;
  background: var(--bg); font-family: var(--font-mono); font-weight: 700; font-size: 12px;
}

/* ---------- scores screen ---------- */
.stat-card-row { display: flex; gap: 12px; }
.stat-card {
  flex: 1; background: var(--bg-elevated); border: 2.5px solid var(--text-primary); border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm); padding: 16px; display: flex; flex-direction: column; align-items: center; gap: 6px;
}
.stat-card img { width: 32px; height: 32px; object-fit: contain; }
.stat-value { font-family: var(--font-score); font-size: 18px; margin: 0; }
.stat-label { font-size: 9px; letter-spacing: 1px; opacity: 0.6; text-transform: uppercase; margin: 0; }
.history-list { display: flex; flex-direction: column; gap: 8px; }
.history-row {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg-elevated); border: 2px solid var(--text-primary); border-radius: var(--radius-sm);
  padding: 10px 14px; font-size: 13px; font-weight: 700;
}
.history-row .h-date { opacity: 0.55; font-weight: 500; font-size: 11px; }
.history-empty { text-align: center; opacity: 0.5; font-size: 12px; padding: 20px 0; }

/* ---------- gameplay ---------- */
#screen-gameplay { background: #cfe8f0; }
.game-hud {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 16px; position: relative; z-index: 5;
}
.pause-icon { font-size: 14px; letter-spacing: -2px; }
#game-canvas { flex: 1; width: 100%; display: block; image-rendering: pixelated; touch-action: none; }
#tap-hint {
  position: absolute; bottom: 18px; left: 0; right: 0; text-align: center;
  font-size: 11px; letter-spacing: 1px; color: rgba(46,42,38,0.55); text-transform: uppercase;
  pointer-events: none; z-index: 5;
}

.overlay {
  position: absolute; inset: 0; background: rgba(20,16,10,0.55);
  display: flex; align-items: center; justify-content: center; z-index: 20;
  padding: 24px;
}
.overlay.hidden { display: none; }
.modal {
  background: var(--bg-elevated); border: 3px solid var(--text-primary); border-radius: var(--radius-md);
  box-shadow: 6px 6px 0px var(--border);
  padding: 28px 24px; width: 100%; max-width: 320px;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  max-height: 90%; overflow-y: auto;
}
.mini-divider { width: 40px; height: 2px; background: var(--text-primary); opacity: 0.3; margin-bottom: 6px; }
.modal-divider { width: 100%; height: 1px; background: rgba(46,42,38,0.2); margin: 4px 0; }
.modal .btn { width: 100%; }

.score-card {
  width: 100%; background: var(--bg); border: 2.5px solid var(--text-primary); border-radius: var(--radius-md);
  padding: 16px; display: flex; flex-direction: column; gap: 8px; align-items: center;
}
.final-score-label { font-size: 10px; letter-spacing: 2px; opacity: 0.5; text-transform: uppercase; margin: 4px 0 0; }
.final-score-value { font-family: var(--font-score); font-size: 34px; margin: 4px 0; }
.score-row { width: 100%; display: flex; align-items: center; justify-content: space-between; font-size: 12px; font-weight: 700; padding-top: 8px; border-top: 1px solid rgba(46,42,38,0.15); text-transform: uppercase; letter-spacing: 0.5px; }
.score-row .inline-icon { width: 14px; height: 14px; vertical-align: -2px; margin-right: 6px; }
.achievement-row { display: flex; gap: 8px; width: 100%; }
.achievement-badge {
  flex: 1; background: var(--accent-tint); border: 2px solid var(--text-primary); border-radius: var(--radius-sm);
  padding: 10px 6px; display: flex; flex-direction: column; align-items: center; gap: 4px; font-size: 9px; font-weight: 700; text-transform: uppercase; text-align: center;
  color: var(--accent-dark);
}
.achievement-badge img { width: 22px; height: 22px; }
.achievement-badge.locked { background: transparent; border-style: dashed; opacity: 0.4; }

body.no-animations .run-bob { animation: none; }
body.no-animations .screen { animation: none; }

@media (max-width: 420px) {
  #phone { border-radius: 0; border-width: 0; height: 100%; }
  body {
    padding: env(safe-area-inset-top, 0px) env(safe-area-inset-right, 0px)
             env(safe-area-inset-bottom, 0px) env(safe-area-inset-left, 0px);
  }
  .search-bar input, select#opt-language { font-size: 16px; }
}

@media (max-width: 360px) {
  .bottom-nav { gap: 2px; padding-left: 4px; padding-right: 4px; }
  .nav-tab { padding: 6px 2px; font-size: 8px; letter-spacing: 0.2px; }
  .nav-tab img { width: 20px; height: 20px; }
}

/* short viewports (rotated phone / landscape): the fixed chrome (title +
   buttons) needs a smaller floor than the portrait clamp()s allow once
   the dino illustration has already shrunk away to nothing */
@media (max-height: 420px) {
  #screen-home .header-row { padding: 8px 24px 2px; }
  #screen-home .hero-copy { padding-top: 4px; }
  #screen-home .game-title { font-size: 22px; letter-spacing: 3px; }
  #screen-home .subtitle-row { margin-top: 4px; }
  #screen-home .subtitle { font-size: 10px; }
  #screen-home .hero-dino { padding-bottom: 2px; }
  #screen-home .cta-col { gap: 6px; padding: 0 24px 6px; }
  #screen-home .btn { padding: 7px 24px; }
  #screen-home .bottom-nav { padding: 4px 8px 3px; }
  #screen-home .nav-tab { padding: 4px 6px; }
}

/* iOS Safari: 100vh includes the toolbar area even when it's showing.
   100dvh tracks the real, currently-visible viewport instead. */
@supports (height: 100dvh) {
  html, body { height: 100dvh; }
}